import Vue from 'vue'
import Router from 'vue-router'

Vue.use(Router)

/* Layout */
import Layout from '@/layout'

/**
 * Note: sub-menu only appear when route children.length >= 1
 * Detail see: https://panjiachen.github.io/vue-element-admin-site/guide/essentials/router-and-nav.html
 *
 * hidden: true                   if set true, item will not show in the sidebar(default is false)
 * alwaysShow: true               if set true, will always show the root menu
 *                                if not set alwaysShow, when item has more than one children route,
 *                                it will becomes nested mode, otherwise not show the root menu
 * redirect: noRedirect           if set noRedirect will no redirect in the breadcrumb
 * name:'router-name'             the name is used by <keep-alive> (must set!!!)
 * meta : {
    roles: ['admin','editor']    control the page roles (you can set multiple roles)
    title: 'title'               the name show in sidebar and breadcrumb (recommend set)
    icon: 'svg-name'/'el-icon-x' the icon show in the sidebar
    breadcrumb: false            if set false, the item will hidden in breadcrumb(default is true)
    activeMenu: '/example/list'  if set path, the sidebar will highlight the path you set
  }
 */

/**
 * constantRoutes
 * a base page that does not have permission requirements
 * all roles can be accessed
 */
export const constantRoutes = [{
		path: '/login',
		component: () => import('@/views/login/index'),
		hidden: true
	},
	{
		path: '/404',
		component: () => import('@/views/404'),
		hidden: true
	},
	{
		path: '/',
		component: Layout,
		redirect: '/dashboard',
		children: [{
			path: 'dashboard',
			name: 'Dashboard',
			component: () => import('@/views/dashboard/index'),
			meta: {
				title: '首页',
				icon: 'dashboard'
			}
		}]
	},
	{
		path: '/example',
		component: Layout,
		redirect: '/example/table',
		name: 'Example',
		meta: {
			title: 'Example',
			icon: 'el-icon-s-help'
		},
		children: [{
				path: 'table',
				name: 'Table',
				component: () => import('@/views/table/index'),
				meta: {
					title: 'Table',
					icon: 'table'
				}
			},
			{
				path: 'tree',
				name: 'Tree',
				component: () => import('@/views/tree/index'),
				meta: {
					title: 'Tree',
					icon: 'tree'
				}
			}
		]
	},
	{
		path: '/form',
		component: Layout,
		children: [{
			path: 'index',
			name: 'Form',
			component: () => import('@/views/form/index'),
			meta: {
				title: 'Form',
				icon: 'form'
			}
		}]
	},
	{
		path: '/nested',
		component: Layout,
		redirect: '/nested/menu1',
		name: 'Nested',
		meta: {
			title: 'Nested',
			icon: 'nested'
		},
		children: [{
				path: 'menu1',
				component: () => import('@/views/nested/menu1/index'), // Parent router-view
				name: 'Menu1',
				meta: {
					title: 'Menu1'
				},
				children: [{
						path: 'menu1-1',
						component: () => import('@/views/nested/menu1/menu1-1'),
						name: 'Menu1-1',
						meta: {
							title: 'Menu1-1'
						}
					},
					{
						path: 'menu1-2',
						component: () => import('@/views/nested/menu1/menu1-2'),
						name: 'Menu1-2',
						meta: {
							title: 'Menu1-2'
						},
						children: [{
								path: 'menu1-2-1',
								component: () => import('@/views/nested/menu1/menu1-2/menu1-2-1'),
								name: 'Menu1-2-1',
								meta: {
									title: 'Menu1-2-1'
								}
							},
							{
								path: 'menu1-2-2',
								component: () => import('@/views/nested/menu1/menu1-2/menu1-2-2'),
								name: 'Menu1-2-2',
								meta: {
									title: 'Menu1-2-2'
								}
							}
						]
					},
					{
						path: 'menu1-3',
						component: () => import('@/views/nested/menu1/menu1-3'),
						name: 'Menu1-3',
						meta: {
							title: 'Menu1-3'
						}
					}
				]
			},
			{
				path: 'menu2',
				component: () => import('@/views/nested/menu2/index'),
				name: 'Menu2',
				meta: {
					title: 'menu2'
				}
			}
		]
	},
	{
		path: 'external-link',
		component: Layout,
		children: [{
			path: 'https://panjiachen.github.io/vue-element-admin-site/#/',
			meta: {
				title: 'External Link',
				icon: 'link'
			}
		}]
	},
	{
		path: '*',
		redirect: '/404',
		hidden: true
	}
]

const createRouter = () => new Router({
	mode: 'history', // require service support
	scrollBehavior: () => ({
		y: 0
	}),
	routes: constantRoutes
})

const router = createRouter()

// Detail see: https://github.com/vuejs/vue-router/issues/1234#issuecomment-357941465
export function resetRouter() {
	const newRouter = createRouter()
	router.matcher = newRouter.matcher // reset router
}

export default router